86720716 has 12 divisors (see below), whose sum is σ = 153326488. Its totient is φ = 42913152.

The previous prime is 86720707. The next prime is 86720729. The reversal of 86720716 is 61702768.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111366 + ... + 112141.

Almost surely, 2^86720716 is an apocalyptic number.

It is an amenable number.

86720716 is a deficient number, since it is larger than the sum of its proper divisors (66605772).

86720716 is a wasteful number, since it uses less digits than its factorization.

86720716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223608 (or 223606 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 86720716 is about 9312.3958249207. The cubic root of 86720716 is about 442.6301080375.

The spelling of 86720716 in words is "eighty-six million, seven hundred twenty thousand, seven hundred sixteen".